body {
  background-color:black;

}

.box {
  background-color: rgb(255, 14, 14, 0.3);
  padding: 10px;
  margin: 10px;
  color: white;
  border-radius: 30px;
  border: 7px solid green

}

.header {
  padding: 20px;
  text-align: auto;
  background-color: darkgreen;
  color: white;
  font-size: 30px;
}